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3 years ago

PLEASE HELP ME PLEASE LOL Solve for x and y. Round your answers to the nearest tenth.

Mathematics

2 answers:

trasher [3.6K]3 years ago

4 0

Answer:

Step-by-step explanation:

Pachacha [2.7K]3 years ago

4 0

Answer:

x ≈ 6.6, y ≈ 13.3

Step-by-step explanation:

Using the tangent ratio in the right triangle to find x

tan30° = $\frac{opposite}{adjacent}$ = $\frac{BC}{AB}$ = $\frac{x}{11.5}$ ( multiply both sides by 11.5 )

11.5 × tan30° = x , then

x ≈ 6.6 ( to the nearest tenth )

Using the cosine ratio in the right triangle to find y

cos30° = $\frac{adjacent}{hypotenuse}$ = $\frac{AB}{AC}$ = $\frac{11.5}{y}$ ( multiply both sides by y )

y × cos30° = 11.5 ( divide both sides by cos30° )

y = $\frac{11.5}{cos30}$ ≈ 13.3

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zavuch27 [327]

Answer:

It is the same-side interior angle of B which is the vertical angle of 100 (?)

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2 years ago

A 95% confidence interval for the mean number of television per American household is (1.15, 4.20). For each of the following st

liq [111]

Answer:

a. False

b. True

c. False

d. False

e.True

f. True

Step-by-step explanation:

The 95% is confidence interval its not a probability estimate. The probability will be different from the confidence interval. Confidence interval is about the population mean and is not calculated based on sample mean. Every confidence interval contains the sample mean. There is 95% confidence that the number of televisions per American household is between 1.15 to 4.20.

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2 years ago

Write RS in component form, with R(7, 8) and S(0,5),

german

Answer:

<-7,-3>

Step-by-step explanation:

To write RS in component form we need to know how far to move over horizontally and then how many to move vertically.

Since horizontal movement is the x values, we subtract the x values of R and S first.

0 - 7 = -7

Since vertical movement is in the y values we subtract those next.

5 - 8 = -3